Secondly, if the two-segment closing law, the guide vanes close slowly first and then faster, only one pressure peak will be left.
当机组采用先慢后快的两段折线式导叶关闭规律时，蜗壳进口压力只有单峰。
Secondly, if the two-segment closing law, the guide vanes close slowly first and then faster, only one pressure peak will be left.
当机组采用先慢后快的两段折线式导叶关闭规律时，蜗壳进口压力只有单峰。
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